Earthworms: Earthworm Diversity and Soil Nitrogen Levels

In abd: The Analysis of Biological Data

Description

Number of earthworm species and total nitrogen content in the soil in 39 hardwood forest plots.

Format

A data frame with 39 observations on the following 2 variables.

worm.species

a numeric vector

nitrogen

a numeric vector

Source

Gundale, M.J., W.M. Jolly, and T.H. Deluca. 2005. Susceptibility of a northern hardwood forest to exotic earthworm invasion. Conservation Biology 19: 1075-1083.

References

http://www3.interscience.wiley.com/journal/118701215/abstract

Examples

str(Earthworms)
xyplot(nitrogen ~ worm.species, Earthworms)

Example output

Loading required package: nlme
Loading required package: lattice
Loading required package: grid
Loading required package: mosaic
Registered S3 method overwritten by 'mosaic':
  method                           from   
  fortify.SpatialPolygonsDataFrame ggplot2

The 'mosaic' package masks several functions from core packages in order to add 
additional features.  The original behavior of these functions should not be affected by this.

Attaching package: ‘mosaic’

The following objects are masked from ‘package:dplyr’:

    count, do, tally

The following object is masked from ‘package:Matrix’:

    mean

The following object is masked from ‘package:ggplot2’:

    stat

The following objects are masked from ‘package:stats’:

    binom.test, cor, cor.test, cov, fivenum, IQR, median, prop.test,
    quantile, sd, t.test, var

The following objects are masked from ‘package:base’:

    max, mean, min, prod, range, sample, sum

'data.frame':	39 obs. of  2 variables:
 $ worm.species: int  0 0 0 0 0 1 1 1 1 1 ...
 $ nitrogen    : num  0.22 0.19 0.16 0.08 0.05 0.33 0.3 0.26 0.24 0.2 ...

abd documentation built on May 2, 2019, 2:14 p.m.